| When cleaning one-ways don't work.
For anyone who hasn't figured it out yet, sometimes on a high-mileage machine, the one-way won't be the problem,the shaft it rides on gets microscopically (or more) dog-boned, and can be fixed a few times before throwing away the shaft (and in some cases the machine) by buffing lengthwise along the shiny section under the one-way bearing.
I've fixed dozens of slipping one ways this way. I use an old nasty hunk of green scotch-brite. Dirtier the better! If you buff too hard or the wrong direction (i.e., around the shaft instead of along the length), you'll make it worse.
What you're doing is buffing tiny grooves into the shiny worn area for the one way bearings to lock on to! | 
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